Add More  functionalities
Add More  functionalities

isHexColor   => check a string if it is a hex color or not
isRGBColor  => check a string if it is a RGB color or not
hexToRGB    => convert hex color to RGB color
hexToDec     => convert hex to decimal value
decToHex     => convert decimal to hex value
clamp           => if color value is less then 0 set it to 0
                           if color value is bigger than 255 set it to 255
                           other then than that keep it as it is
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